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Pressure Indicator Transmitters

Pressure indicator transmitters have a digital indicator for providing a local indication of pressure reading, and a 4-20 milliamp output pressure transmitter for sending an analogue signal to control & monitoring instrumentation.

The built-in digital indicators can be scaled via push buttons or adjustment pots to any pressure unit or a 0-100% full scaling.

No additional external supply is required, since the digital indicator is powered by the 4-20mA current loop from the pressure transmitter.

  • DS201P High Range Flush Pressure Gauge, Switch and Sensor
  • DS200P Sanitary Low Range Pressure Gauge, Switch and Sensor
  • LEO3 Current or Digital Output Pressure Gauge
  • DS200 Combined Pressure Switch, Gauge and Sensor
  • DS210 Combined Low Pressure Switch, Indicator and Sensor
  • DS201 Combined Pressure Sensor, Display and Switch
  • Truck loading monitoring using air cushion pressure
  • Autoclave pressure sensor and display with 10 bar range
  • Injection moulding machine 22000 psig 4-20mA output synthetic hydraulic oil pressure sensor
  • 500psig 4-20mA freshwater display, switch and pressure sensor for building management use
  • 250psig air regulator pressure gauge with 4-20mA output and 1/4 NPT male fitting
  • Low vacuum leak detection 4-20mA current loop sensor & gauge

Contents

  • Product Help
    • Specifying pressure indicator transmitter features
      • Indicator type
      • Output signal
      • Alarm switch
      • Re-calibration
      • Turn-down ratio
    • Checklist for pressure indicator transmitter requirements

Product Help

Specifying pressure indicator transmitter features

Indicator type

A pressure indicator transmitter includes a built-in pressure gauge for reading in-situ.

Do you require LCD, backlit LCD, or an LED display?

A display can be configured to display the pressure reading in different pressure units, or as a % full scale, the 4-20mA output, alarm levels, and calibration values.

Output signal

Typically a pressure transmitter with a built-in display indicator will have a 4-20mA 2 wire current loop signal. This 4-20mA signal may include intrinsically safe or flameproof certification for hazardous areas, and HART communications for use in a process plant with other HART enabled devices.

Alarm switch

Since there is a built-in display it is possible to add alarm contact switches on some pressure indicator transmitters which are easily configurable via the display and menu keys.

The contact switches are normally a solid state type such as PNP or NPN, which keeps the size and wiring to a minimum.

Re-calibration

Depending on the product type it is possible to re-calibrate the 4-20mA output signal and the display reading by adjusting the zero and span setting via the display panel menu buttons.

Turn-down ratio

Turn-down the output signal to re-scale the measured range. The turndown ratio defines how low the range can be reduced. A ratio of 3:1 or 4:1 is possible with simpler lower cost transmitters, and increases to 10:1 or 100:1 with more expensive intelligent transmitters.

Will the pressure indicating transmitter need to be moved or re-purposed to measure over a different range?

Checklist for pressure indicator transmitter requirements

Define your pressure indicator transmitter requirements using this checklist:

  1. Indicator type?
  2. Output signal?
  3. Alarm switch?
  4. Re-calibration?
  5. Turn-down ratio?
  6. Pressure range?
  7. Electrical connection?
  8. Process connection?

Primary Sidebar

Pressure Sensor Specifier

Specify a pressure sensor
Select your pressure sensor requirements

Digital Pressure Gauge Specifier

Specify a digital pressure gauge
Select your digital pressure gauge requirements

Product Enquiry

Send us your enquiry for Pressure Indicator Transmitters to get assistance with this product type.

Email Your Enquiry

enquiries@sensorsone.com

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